Loading device



4 'Sheets-Sheet l May 25, 1948- A. R. HENRY LOADING DEVICE Filed Nov. 18, 1944 Maly 25, i948.

A. R. HENRY 'LOADING DEVICE Filed Nov. 18, 1944 4 Sheets-Sheet 2 BY y 1 A. R. HENRY LOADING DEVICE May 25, 194s.

Filed Nov. 18, 1944 4 Sheets-Sheet May 25, 1948. A. R. HENRY 2,442,043

LOADING DEVICE Filed Nov. 18, 1944 4 Sheets-Sheet 4 Patented May` 2.5, 1948 Albert R. Henry, Salina,

Kans., assignor to Henry Manufacturing Company, Inc., Topeka, Kans.,

a corporation of Kansas Application Nuvember 1s, 1944, serial No. 564,095

6 Claims. 1 This invention relates to improvements in loading devices and refers more specifically to loading attachments for use with standard tractors. The principal object of the present invention is the provision of a loading attachment that is adjustable to fit many of the various makes `and sizes of standard farm Another object is the provision of a novel cable winding drum having means for causing the cable to wind in an even helical form on the drum.

A further object is the provision of a loading device having a combination bucket and fork for general purpose use about the farm.

Other objects are simplicity and economy oi construction, ease and rapidity of operation, and l adaptability for quick adjustment to ilt various sizes and makes of tractors.

With these objects in view, as well as other objects which will appear during the course of theV specification, reference will be had to the drawings wherein:

Figure 1 is a side elevation of a loading device embodying this invention, shown with the bucket in the lowered loading position in solid lines and in the raised, dumped position in dotted lines.

Fig. 2 is a plan view of the loader with the bucket lowered and parts broken away.

Fig. 3 is a front eleyation of the loader with parts broken away and with some parts omitted.

Fig. 4 is an enlarged plan view of a portion of the boom and the special bucket carried thereby.

Fig. 5 is a sectional view taken on line V-V of Fig. 4.

Fig. 6 is a sectional view taken on line VI-VI of Fig. 4.

Fig. '7 is an enlarged fragmentary, vertical section taken on line VII- VII of Fig. 1.

Fig. 8 is a sectional view showing the cable lift andits associated parts. y

Fig. 9 is an enlarged sectional view taken on line D-IX of Fig. 3.

Throughout the several views like reference characters refer to similar parts and Ithe numeral |6 designates a tractor of any of the standard types used on the farm. The tractor shown is of the row crop type vhaving a frame I8 mounted on the rear driving wheels 20 and the dual front steering wheels 22. Frame I84 carries the usual power unit (not shown)l provided with a power take-off shaft 24 and includes the rear axle housing 26 which carries the axle 28 and has a diierential housing 30. Housing 30 carries a seat 32 for the operator who is in convenient reach of the steering wheel 34 which is mounted on the steering rod 36 having a stabilizing rest post 38.

The loading attachment adapted to be carried by and operated by the tractor power unit comtractors now in general p rises a substantially vertically disposed frame 46 having a pair of out-turned channel track members 42 which are joined together at their upper extremities by a cross head bar 44 braced thereto by means of diagonally disposed bars 46. Cross bar 48 joins together members 42 intermediate their ends and is securely joined thereto by meansdoi gusset plates 50. This frame 40 is pivotally attached to tractor frame brackets 52 by means of pins 54 which pass'through holes formed through bracket 62 and bracket plate 56 which is rigidly secured to channel track member 42. The bracket plate 66 has a vertically disposed series of holes 61 to permit vertical adt justment oi the trame 40. Each channel member 42 is provided with an ear 58 to which the angle iron bar 66 is pivoted by pin 62. Bar 66 is made up of two angle iron sections joined together by bolts 84 which may be adjusted to different holes of the series 66 so as to shorten or lengthen the bar to vary the angle of inclinan tion of the frame 40.

Bar 60 is secured at its lower end to a bracket y curely mounted a transverse pin 82. This bar 60,

when lengthened as described above, will increase the forward inclination of the track members 42, thus causing the positioning of lthe bucket at a greater distance from the tractor when it is in the raised position.

` The boom 84 is of substantially U-shaped form having side arms 86 and a cross header 88. Adjacent and to the rear of the header 88 at each side of the boom, is a bracket 90 secured to the side arms 86 and carrying a roller 92. These rollers are adapted to respectively engage the outwardly turned channel tracks 42 for movement therein. The lower end of the channels 42 are closed at 94 to prevent the rollers from moving out of the channel. Side arms 86 of the boom are made up of a pair of spaced apart angle irons 96. It will be noted that the bracket 90 has a transverse lug 98 which extends between the angle irons 96 and is secured thereto by means of bolts |06 which may be adjusted along the series of holes 99 to vary the position of bracket 98 relative to the side arms 86. The rear ends of side arms 86 extend beyond the bracket 'I8 and the pin 82 extends between the angle irons 96 so that the side arms have a sliding movement for longitudinal adjustment as the boom is raised. By referring to Fig. 1, it will be noted that a ing the loading operation is lto arms I |'0 by pins `the raised position as shown in step block m rests against pin lz when the bucket carried by the boom is in the loading position so that the thrust against the bucket dur- ,transmitted to the pin 8 2 through the side arms 86.

Stop blockV |04 is positioned between the angle irons 96and is secured by bolts |0| which are iitted through holes |02 formed in bars 96. Holes |02 are in a series of suflicient number to permit adjustment of the stop block along the angle irons.

The rearward ends of theangle irons 96 are spaced apart by' a block |06; also the intermediate portions of the angle lirons 96 are provided with reenforcing, spaced apart blocks |08. The

88. The cable then extends upwardly over a sheave wheel |66 which is rotatably carried by a pin |68 mounted in header bar 44, thence downwardly to winding drum` |54 to which it is rigidly attached.- This cable is of suiiicient length to permit the bucket ||2 to be moved to the ground position. The leverage obtained by the use oi this type of lift is two to one so that the load may be easily lifted. Y t

Dimculty has been previously encountered in producing a lift of this character wherein the boom 84 is provided at its forward end with forwardly extending arms between which is mounted a bucket ||2. This -bucket is pivoted I4 in such a manner that the bucket when loaded and in the raised position, tends to tilt forwardly to release the load.

Latch means ||5 for securing the bucket against tilting is comprises a detent member to the rear of the bucket by bolts ||9 and has a cross bar H6 which is adapted to be engaged by a latch member ||8 which is rigidly mounted on shaft rotatably mounted in bearings |22 which are integral with cross header 88. Shaft |20 extends transversely of the latch to extend through a bearing |24 and is provided at its outer end with a rigidly attached operating arm |26 which is normally held in the forward position by means of a compression spring |28 positioned between an arm |21 of the operating arm |26 and the top side of side arm 86. 'I'his spring causes the latch member to normally engage cross bar H6. An operating cable |30 secured to the free end of arm I 26 is secured at its other end to a transverse bar |32 secured to rod 36. This operating cable may be engaged by the operator to release the bucket at any point above the ground. Normally it is operated when the bucket is in Fig. 1.

The power for raising and lowering the boom and bucket is from the tractor power take-oil shaft 24. This power take-oil;I shaft is now common structure on substantially all tractors and may vary slightly in position and direction; however, they are all adapted to furnish power for handling this loader. In the type of tractor shown, the pulley wheel |34 is rigidly attached to the power take-off shaft 24 and is operatively connected with the pulley wheel |36 of a power transmission member |38 by means of a belt |40. This power transmission member is securely attached to cross bar 48 and is provided with a shaft |42 which carries the pulley |36. This power unit is provided with a clutch member |44 which is adapted to be operated to drive shaft |46 on which is mounted sprocket wheel |46. wheel is operatively connected with a sprocket wheel |50 by sprocket chain |52. Sprocket wheel |50 is securely attached to the central portion of a cable winding drum |64, which in turn is mounted for rotation in bearings |56 secured to track member 42.

The boom 84 is raised and lowered by means of a. pair of cables |58 disposed at opposite sides of frame 40, each being similarly mounted as shown in Fig. 8. One end of the cable is xed to the head bar 44 by means of a clamp member |60, then extends downwardly to pass around a sheave wheel |62 rotatably mounted in l brackets |64 which extends rearwardly from the cross header 76 o us This sprocket best shown in Figs. 5 and 6 and c ||1 securely attached cable will denitely wind in a uniform helical path about the winding drum proper winding of the cable so no piling up of the cable on the drum, the following mechanism is provided.

The trunnions |10 of the drum are mountedin the bearings |56 so as to prevent longitudinal movement of the drum and adjacent each end of the drum is securely affixed a disk |12 having a frusto-conical inner face against which the cable |58 rests when the bucket is in the lowered position. This cable is attached to the drum by means of a cable fastening means |14 such as shown in my application, Serial No. 551,015, filed August 24, 1944. Adjacent each of the disks |12 is a complementary disk |16 which is urged outwardly against the cable |58 by means of a compreion spring |18 so that these springs |18 are mounted freely on drum' |38 whereby each rests against its respective disk |16 and the sprocket wheel |50. As the cable is wound on the drum, disks |16 move inwardly to compress springs |16. thus insuring the proper aligning of the cable during the winding operation. The cable securing means |14 is so positioned and constructed that during the winding of the first convolution, the cable i'll will always be forced inwardly so as to start the proper positioning of the cable on the drum. In many instances, however, the cable will not be totally unwound and may always have at least one full convolution on the drum |34.

-During the dumping operation, it is necessary to provide shock absorbers |80 to prevent damage to the machine, due to the sudden drop of Each shock absorber comprises a cylindrical member |82 pivoted at |64 to brackets |86 mounted on angle bar 66. This cylindrical member |82 is recessed and provided with a cap |86 through which extends a rod I 60 about which is mounted a compression spring |62. Spring |92 is disposed between cap |88 and a collar |94 rigidly attached to rod |80 so that as the rod is moved outwardly, it will compress spring |92. Rod |90 is connected by means of chain |96 through fastening means |96 to the above pivot point I I4 so pivoted at 202 to Aa vertical standard 204 rigidly carried by angle iron 96. An operating rod 206 is pivoted to lever 200 at 208 and extends forwardly to operatively engage a suitable clutch operating mechanism (not shown).

'I'he bucket ||2 as shown throughout the variviews is of special construction and constiand to insure this` that there will be tutes a combined bucket andfork. The fork 2id comprises a transverse bar Z l2 having a series of comb-like teeth 2id extending in spaced apart parallel relation therefrom as clearly shown in Fig. 2. This fork is secured to the bucket il? by means of bolts 2 i6 and also by detents 2 l5 welded to the under side of the teeth 2id. All that is necessary to separate the fork from the bucket is to remove bolts 2l6 and move the fork slightly forward to release the detents 2 I3.

It is quite apparent that many other types ci attachments might be utilized in conjunction with this loader for the purpose of handling various types of materials.

It is quite apparent that this loading attachment is easily operated and controlled by one man from the seat of the tractor.

Due, to slightly different structural features of the various types of farm tractors, it may, in some cases, be found necessary to make slight changes in the structure of the attachment. However, this may be accomplished without departing from the spirit of the invention.

Having thus described the invention, what I claim as new and desire to be secured by Letters Patent is: i

l. A loading attachment adapted to be mounted on and cpenated by a tractor, comprising a vertically disposed frame pivotally mounted intermediate its top and bottom to the frontend of said tractor, means for adjustably securing said frame in a plurality of angled relations to said tractor and against movement relative thereto, a boom shiftably mounted at its forward end along said frame and slidably mounted at its rear portion on pins xed to said tractor, a bucket ed on and operatedl by a tractor, comprising a'- vert-ically disposed frame pivotally mounted intermediate its top and bottom to the iront end of said tractor, means for adjustably securing said frame in predetermined inclined positions against movement relative to said tractor, a boom shiftably mounted at its forward end along said frame and slidably mounted at its rear portion on pins fixed to said tractor,- a bucket tiltably mounted onthe forward end of said boom, means for nor'- mally securing said bucket in the loading, position, a manually controlled means for raising and lowering said boom, and means for releasing said bucket securing means to permit the bucket to tilt, and resilient means to limit the tilting of said bucket. 3. A loading attachment adapted to be mounted on and operated by a. tractor, comprising a vertically disposed frame having side track members pivotally mounted intermediate their ends to the front end of said tractor, longitudinally adjustable means for securing said frame in predetermined angled relations to the tractor and against movement relative to said tractor, a boom shiftably mounted at its forward end in said track members and slidably mounted at its rear portion on pins iixecl to said tractor, e. bucket tiltably mounted on the forward end of said boom. means for normally securing said bucket in the loading position, a manually controlled means for raising and lowering said boom and means for releasing said bucket securing means. A 4. A loading attachment adapted to be mountcomprising a vertically disposed frame having side track members pivotally mounted intermediate their ends to the front end of said tractor, longitudinally adjustable means extending to the rear of said tractor for engaging and securing said frame against movement relative to said tractor, a boom shiftably mounted at its'forward end in said track members and slidably mounted atits rear portion on pins ilxed to said tractor, a bucket tilt,- ably mounted on the forward end of said boom, stops carried by said boom to 'engage said pins for limiting the backward movement oi' said boom, means for normally securing said bucket in the loading position, a manually controlled means for raising and lowering said boom, and means for releasing said bucket securing means.

5. A loading attachment adapted to be mounted on and operated by a tractor, comprisingfa frame having guides pivotally carried in a substantially vertical position by the front end of said tractor and being vertically adjustable relative thereto, longitudinally adjustable means for securing said frame against movement on its pivots, a boom shiftably mounted at its forward end in said guides, and mounted at its rear end on pins xedto said tractor and transversely adjustable relative to said tractor, a bucket tiltably mounted on the forward end of said boom, latch means for normally securing said bucket in the loading position, manually operable means for releasing said latch means, and a. cable operable by said tractor to raise and lower said boom.

6. In a device of the chanacter described. a cable winding apparatus including a rotatably mounted drum having a centrally disposeddriving means whereby it is selectively driven in either direction, a cable having one of its ends attached to one end of said drum to wind thereabout and its other end attached to the other end of said drum to Wind in the opposite direction, a collar mounted on said drum at each side of said driving means with a helical spring disposed between the driving means and the respective co1- lars to constantly urge the collars against the respective cables whereby the cable will be caused to form even closed convolutions about said drum as the driving means is operated.

ALBERT R.- HENRY.

REFERENCES CITED The following references are of vrecordir the file of this patent:

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